Ford Mustang Forum - View Single Post - Where do HP numbers advertised by aftermarket websties come from?
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post #11 of (permalink) Old 03-10-2016
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Joined: Sep 2015
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And all that is what I said, yet not as eloquently. RPM at which measurement was taken. Salesmanship plain and simple... It's not untrue, it's just all about where the numbers are measured. That, and there are some usable gains to be had if implemented correctly.

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